The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2006
Filed:
Oct. 31, 2003
Jyhchau Horng, Warren, NJ (US);
Jyhchau Horng, Warren, NJ (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
A method and system that increases transmit diversity gain in a wireless communication system. The system includes a transmitter with 2transmit antennas, where N is greater than one, and a receiver with one or more receive antenna. The transmitter includes N stages connected serially to each other. The first stage is a symbol level space-time transmit diversity encoder. Each of the next N−1 stages is a block level space-time transmit diversity encoder, for a total of N stages. The last stage is connected to the 2antennas. The transmitter generates pairs of symbols in a form Xand X, The pairs of symbols are encoded by the first stage to produce a 2×2output matrix C. Then, in each next block level stage n, the 2×2output matrix of a previous stage is encoded to a 2×2output matrix, until a final output matrix has 2rows of transmit symbols. The transmit symbols of the final output matrix are fed, in a left-to-right order, for each row, in a top-to-bottom order, to a corresponding different one of the 2transmit antennas. A transmit weight is applied to each transmit symbol before transmitting the transmit symbol.